From 358b3e26f4da87823c1c7f43d5ebc4012b749692 Mon Sep 17 00:00:00 2001
From: gedoor <gekunfei@live.com>
Date: Wed, 20 Oct 2021 08:48:24 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96?=
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---
 .../java/io/legado/app/utils/HandlerUtils.kt  | 22 ++++++++++---------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/app/src/main/java/io/legado/app/utils/HandlerUtils.kt b/app/src/main/java/io/legado/app/utils/HandlerUtils.kt
index 0eacea43b..3ce76e5ca 100644
--- a/app/src/main/java/io/legado/app/utils/HandlerUtils.kt
+++ b/app/src/main/java/io/legado/app/utils/HandlerUtils.kt
@@ -11,7 +11,7 @@ import kotlinx.coroutines.launch
 
 /** This main looper cache avoids synchronization overhead when accessed repeatedly. */
 @JvmField
-val mainLooper: Looper = Looper.getMainLooper()!!
+val mainLooper: Looper = Looper.getMainLooper()
 
 @JvmField
 val mainThread: Thread = mainLooper.thread
@@ -22,15 +22,17 @@ val isMainThread: Boolean inline get() = mainThread === Thread.currentThread()
 internal val currentThread: Any?
     inline get() = Thread.currentThread()
 
-@JvmField
-val mainHandler: Handler = if (SDK_INT >= 28) Handler.createAsync(mainLooper) else try {
-    Handler::class.java.getDeclaredConstructor(
-        Looper::class.java,
-        Handler.Callback::class.java,
-        Boolean::class.javaPrimitiveType // async
-    ).newInstance(mainLooper, null, true)
-} catch (ignored: NoSuchMethodException) {
-    Handler(mainLooper) // Hidden constructor absent. Fall back to non-async constructor.
+val mainHandler: Handler by lazy {
+    if (SDK_INT >= 28) Handler.createAsync(mainLooper) else try {
+        Handler::class.java.getDeclaredConstructor(
+            Looper::class.java,
+            Handler.Callback::class.java,
+            Boolean::class.javaPrimitiveType // async
+        ).newInstance(mainLooper, null, true)
+    } catch (ignored: NoSuchMethodException) {
+        // Hidden constructor absent. Fall back to non-async constructor.
+        Handler(mainLooper)
+    }
 }
 
 fun runOnUI(function: () -> Unit) {